Joy B Delphos , OH October 03, 2014 Magnatron had gone bad in our microwave the microwave worked just did not produce any heat My husband and dad took the over the counter microwave down and took it apart to find the magnetron. They removed it and replaced with the new part. Read More... 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes Tools: Screwdrivers